What causes lie bumps?
Lie bumps are thought to be extremely common, but they’re not well researched. Doctors aren’t entirely sure exactly what causes either type of lie bumps. We do know that they’re more likely to occur in people who eat diets with lots of highly acidic foods (including fruits and vegetables) and sugary foods.
Other possible causes include:
peaks in stress, which can cause an inflammatory response
trauma, even just from biting the tongue
gastrointestinal complications, including constipation